-Have you ever been (to be) to the science museum? -Yes l have. -When you (to be) there? -I (to be) there (to play)?

- HAVE you ever BEEN to the science museum? - Если видите \"ever\", используйте Present Perfect.

- When you WERE there? - Продолжая разговор, англичане предпочитают переходить c Present Perfect на Past Simple.

- I WAS there WHEN LIVERPOOL PLAYED ITS THIRD WINNING MATCH ON THE EUROPEAN CUP. - Используем Past Simple, если указано, в какое время событие происходило в прошлом.